Annealing-furnace.



PATENTED SEPT. 19, 1905.

A. RIDD. ANNBALING PURNACE.

APPLICATION FILED NOV. 2. 1904.

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Witnesses No. 800,018. PATENTBD SEPT. 19, 1905. A. RIDD.

ANNBALING FURNAOE.

ArrLIoATIoN FILED Nov. 2. 1904. l

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AMBROSE RIDD, OF NEWPORT, KENTUCKY.

ANNEALING-FURNACE.

Specification of Letters Patent.

Patented Sept. 19, 1905.

Application filed November 2, 1904:. Serial No. 231,145.

T0 wil whom, it may concern:

Be it known that I, AMBRosE RIDD, a citizen of the United States, residing at Newport, in the county of Campbell and State of Kentucky, have invented a new and useful Annealing-Furnace, of which the following is a specification. i

This invention relates to apparatus employed for the manufacture of sheet metal, and more especially what are known as black sheets used in the manufacture of tin and terne plates.

The principal object of the invention is to provide a portable annealing-furnace that may be placed close to the rolls in order to receive the sheets of metal before there is time for any cooling or chilling, said sheets being retained within the furnace until the annealing operation is completed, or the furnace serving as a reheater or temporary receptacle for the sheets, from which they may be again drawn for rerolling.

A further object of the invention is to provide a novel form of portable furnace in which the vnecessary temperature may be attained without subjecting the sheets to the direct impact of a heating-flame.

With these and other objects in view, as will more fully hereinafter appear, the invention consists in certain novel features of construction and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes inthe form, proportions, size, and minor details of the s tructure may be made without departing from the spirit or sacrificing any of the advantages of the invention.

1n the accompanying drawings, Figure 1 is a longitudinal sectional elevation of an annealing-furnace constructed in accordance with the invention. Fig. 2 is a transverse sectional elevation of the same on the line 2 2 of Fig. 1. Fig. 3 is a sectional perspective view of a portion of the receiving end of the furnace.

Similar numerals of reference are employed to indicate corresponding parts throughout the several figures of the drawings.

In the manufacture of tin and terne plates and other light sheet metal it is necessary to anneal the plates after the rolling operation-- that is to say, to place the sheets in a furnace that has been previously heated to a temperature above the temperature at which the sheets are rolled, and to retain said sheets within the furnace until the necessary softness is acquired. In the ordinary-processes the stationary annealing-ovens are used, these being necessarily disposed at some distance from the rollers, and the sheets are usually stacked until a sufiicient quantity has been rolled to fully charge an oven. The sheets become chilled and after losing heat it becomes necessary to employ a large quantity of fuel to reheat them to the desired temperature.

In carrying out the present invention the sheets are taken from the rolls A directly to the oven and no chilling of the plates or sheets may occur, so that a considerable saving of fuel is effected.

` The portable furnace includes a structuraliron frame l, provided with suitable bearings 2 for the reception of transverse shafts or axles 3, on which are mounted supportingwheels 4, these wheels preferably traveling on rails 5, that extend from the rollers to a stationary annealing-furnace. The outer casing or jacket 6 of the furnace surrounds an inner muiiie 7, and between the two is formed a continuous space in which is arranged aseries of pipes 8, said pipes being provided with numerous perforations` through which jets of gas are directed against the inner wall 7, the number of pipes and the size of the jet-openings being sufcient to insure the heating of the oven or muffie to the desired temperature. That end of the muiiie adjacent to the rollsA is open, as illustrated in Fig. 3, to permit the entrance and discharge of the sheets, and the outer Wall or casing is preferably provided with openings for the entrance of the air necessary to support combustion.

The furnace is rolled to a point close to the rolls A and receives the sheets as they issue from said rolls,'and after a sufficient quantity of sheets have accumulated the furnace may be removed to a stationary heating-oven .and retained therein until the annealing operation is completed, or the portable furnace may serve merely as a conveyer to carry the sheets from the' rolls to a stationary oven, and in many cases the oven may serve as a reheater in order to receive the sheets between roll-` passes. Y

Having thus described the invention, what is claimed is- 1. A portable annealing oven or furnace, comprising a wheeled frame, an outer jacket carried thereby, an inner oven spaced from IlO the top, bottom and sides of the jacket, and forming a vcontinuous combustion-space, the oven beingopened at one end for the reception of the articles to be annealed, and a plurality of perforated gas-pipes disposed in said combustion-space, said pipes encircling the oven and being arranged to direct heatingjets against the entire outer surface thereof.

2. A portable annealing oven or furnace comprising a Wheeled frame, an outer jacket carried thereby, lan inner oven, the top, bottom and side Walls of which are separated from the jacket by a continuous combustionspace, the oven being .opened at one end for the reception of articles to be annealed, and the corresponding' end of the combustionspace being closed, and a plurality of perforated gas-pipes extending continuously aron nd said inner oven and arranged t0 direct heatingjets against the entire outer surface thereof.

In testimony that I clairn the foregoing as rny own I have hereto afHXed my signature in the presence of two Witnesses.

AMBROSE RIDD.

Vitnesses:

JOHN C. DE Moss, H. L. HAWKINS. 

